Comtek Network Systems UK Ltd.

Nortel Repair Specialists

Comtek repairs and tests the complete range of Nortel telecom products including PDH, SDH, DWDM, Switching, Wireline, Wireless, Enterprise and Optical. Our highly skilled Nortel telecom engineers are all former Nortel company employees and our knowledge of Nortel products is unsurpassed in the repair industry.

Consult With Our Experts

Comtek’s Nortel repair engineering team are available for consulting and trouble shooting. Our experience includes all aspects of infrastructure design, installation, configuration, commissioning and testing of hardware and software for all Nortel product lines.

Our continuous investment in training and the latest test and repair equipment ensures that our repair services are the best in the industry.

To add to our already existing Nortel state of the art facilities at Deeside, Comtek have recently established a Nortel Optical ‘Centre of Excellence’ which has been operating at its Belfast Centre.

Starting with the TN1X, TN4XE and TN16XE range, the plan is to move quickly and progressively to the repair and testing of the complete range of Nortel Optical products.

Hand-Picked Nortel Experts

Comtek operates two dedicated Nortel Repair Labs across its European sites – Our Nortel engineering team is made up of skilled ex-Nortel engineers.

Belfast, with it’s availability of highly skilled ex-Nortel engineers specialises in the higher end more complex equipment repairing and testing OM5200, OME6500, TN64, HDX and LH1600. These products are amongst the most complex ever produced by Nortel and provide the optical backbone for many of today’s telecommunications service providers.

Our comprehensive equipped labs are fully equipped for testing and repairing all the complete range of Nortel products and our workshop is fully ESD compliant. Comtek’s support service will provide 24×7 or 8×5 on SDH and DWDM networks, network managers, spare units, repair in house or engineer to site at customer’s request.

Nortel Supported Devices

A0355200 Power Transfer Unit  NT5D6 Mini-Carrier Card  NT8D53 Power Distribution Unit  Optical Cross Connect DX 
A0634492 Single-mode  NT5D60 Modem Card  NT9D19 Processor Card  Optical Metro 3000 
A0634493 Multi-mode  NT5K02 Analog Line Card  NT9D19 Processor Card  Optical Metro 3100 
A0773054 Superloop  NT5K09 Quad Receiver  NTAG26 Multi-frequency Receiver  Optical Metro 3500 
A0773055 Superloop  NT5K17 Dual Buffer Card  NTAG54 DASS/DPNSS Card  Optical Metro 4000 
A0773056 Superloop  NT5K18 Trunk Card  NTAK02 SDI/DCH Card  Optical Metro 5130 
A0773059 Superloop  NT5K19 Trunk Card  NTAK04 AC/DC PSU  Optical Multiservice Edge 6110 
Business Access Point 120  NT5K21 Receiver Card  NTAK09 DTI/PRI Card  Optical Multiservice Edge 6130 
Business Access Point 120  NT5K36 Dial Trunk Card  NTAK10 DTI  Optical Multiservice Edge 6150 
Business Comm Manager BCM  NT5K48 Tone Detector Card  NTAK20 Clock Controller  Optical Multiservice Edge 6500 
Communication Server 1000  NT5K70 Trunk Card  NTAK79 PRI card  Optical Packet Edge System 
Communication Server 1500  NT5K71 Trunk Card  NTAK93 Interface Daughter  Optical TN-1C 
Communication Server 2000  NT5K72 Trunk Card  NTBK22 MISP Card  Optical TN-1T 
Communication Server 2100  NT5K75 D-Channel Card  NTCG01 Trunk Card  Optical TN-1X 
CS1000E (Meridian)  NT5K82 Trunk Card  NTCG02 Trunk Card  QPC163 48V Regulator 
Ethernet Routing Switch 2500  NT5K83 Trunk Card  NTCK16 Trunk Card  QPC173 Power Monitor 
Ethernet Routing Switch 2500  NT5K84 Trunk Card  NTCK18 Trunk Card  QPC187 Ring Generator 
Ethernet Routing Switch 4500  NT5K96 Analog Line Card  NTDK16 Digital Line Card  QPC412 InterGroup Switch 
Ethernet Routing Switch 4500  NT6D16 D-Channel Card  NTDK20 Controller Card  QPC414 Network Card 
Ethernet Routing Switch 5500  NT6D40 PE PSU DC  NTDK22 Fiber Daughterboard  QPC417 Junctor Board 
Ethernet Routing Switch 5600  NT6D41 CE PSU DC  NTDK23 Fiber Receiver Card  QPC43 Signalling Card 
Ethernet Routing Switch 8300  NT6D42 Ring Generator  NTDK24 Fiber Daughterboard  QPC441 Extender Card 
Ethernet Routing Switch 8600  NT6D43 CE/PE PSU DC  NTDK25 Fiber Card  QPC471 Clock Controller 
IP Audio Conference Phone 2033  NT6D63 Processor Card  NTDK70 AC/DC Global PSU  QPC709 Signalling Card 
IP Phone 1100  NT6D64 Core Unit  NTDK70AB AC/DC PSU  QRF12 48V Rectifier 
IP Phone 1200  NT6D65 Core Card  NTDK72 DC/DC PSU  QRF8 48V Rectifier 
IP Phone 1535  NT6D70 S/T Line Card  NTDK78 DC/DC PSU  QRF9 48V Rectifier 
MFA150 Power System  NT6D71 Line Card  NTDK79 Fiber Daughterboard  QUA6A PFTU 
MPP600 Power Plant  NT6D73 ISDN Processor  NTDK80 Fiber Receiver Card  Secure Router 1000 
Multiservice Switch MSS 15000 & 20000  NT6R14 Enhanced Processor  NTDK83AA IP Daughterboard  Secure Router 1000 
Multiservice Switch MSS 6400  NT6R15 Enhanced Processor  NTDK84 Fibre Daughterboard  Secure Router 2000 
Multiservice Switch MSS 7400  NT7D00AA Top Cap  NTDK91 Chassis  Secure Router 3000 
NT0961 Trunk Card  NT7D00BA Top Cap  NTDK97 Mini Controller  Secure Router 4000 
NT1P61 Fibre Card  NT7D03 Ring Generator  NTDK99 IP Daughterboard  Secure Router 8000 
NT1P62 Fiber Controller Card  NT7D14 CE/PE PSU  NTDR68 Line Card  Virtual Services Platform 9000 
NT1P63 Electro-optical Interface  NT7D16 Data Access Card  NTDR69 Remote Gateway  VPN Gateway 3000 
NT1R20 Analog Line Card  NT7R51 Local Carrier Card  NTDR70 Reach Line Card  VPN Router 1750 
NT4N48BA System Card  NT7R52 Remote Carrier Card  NTDR71 Line Card  VPN Router 2700 
NT4N49 Four Feed PDU  NT8D01B Controller Card  NTDU14 Chassis  VPN Router 2750 
NT5C06 MPR25 Power Rectifier  NT8D02 Digital Line Card  NTDU15 Expansion Chassis  VPN Router 5000 
NT5C07 MPR50 Power Rectifier  NT8D04 Superloop Card  NTDU27 Signalling Server  WLAN 2300 
NT5D03 CP4  NT8D06 PE PSU AC  NTDU41 Voice Media Card  WLAN 2300 
NT5D10 Call Processor  NT8D09 Analog Line Card  NTDU63AA Chassis  WLAN 8100 
NT5D11 T1 Line Card  NT8D14 Trunk Card  NTDW60BAE5 MGC Card  WLAN 8100 
NT5D12 Dual DTI/PRI Card  NT8D15 Trunk Card  NTDW61BAE5 CP-PM Card  WLAN 8100 
NT5D14 T1 Line Card  NT8D16 Receiver Card  NTDW61BAE5 CP-PM Card  WLAN Access Point 2330 
NT5D20 IOP/CMDU4  NT8D17 Conference Card  NTDW62AAE5 DSP Card  WLAN Access Point 2332 
NT5D20 IOP/CMDU4  NT8D21 Ring Generator  NTDW64AAE5 DSP Card  WLAN Access Point 8120 
NT5D21AA Core/Network Module  NT8D22 System Monitor  NTRA07 Pack Switch  WLAN Adapters 2201 & 2202 
NT5D21AA Core/Network Module  NT8D29 CE PSU AC  NTRB21BA TMDI Card  WLAN Controller 8180 
NT5D26 Trunk Card  NT8D35AA Network Module  NTRB33 Fibre Card  WLAN Gateway 2246 
NT5D30 Switch Card  NT8D35DC Network Module  NTRB34 Core Card  WLAN Handset 6100 
NT5D31 Trunk Card  NT8D37AA IPE Module  NTTK01 IP Daughterboard  WLAN Handset 6100 
NT5D33 E1 Line Card  NT8D37DC IPE Module  NTTK02 IP Daughterboard  WLAN Handset 6100 
NT5D34 E1 Line Card  NT8D52AB Blower Unit  NTVQ01AA ITGSA card  WLAN IP Manager 


Our Locations

Choose Comtek for your repair, support, and refurbished hardware needs to benefit from exceptional service and extended product lifespan.

Visit us today to discover our extensive range of repaired and supplied equipment from renowned brands like Cisco, Ciena, Nortel, Juniper, Arista, HPE, Infinera, ADVA, and more.


Comtek Network Systems (UK) Ltd.

Unit 108 Tenth Avenue

Deeside Industrial Park (Zone 3)

Deeside CH5 2UA


Comtek Network Systems (UK) Ltd.

19 Heron Rd

Belfast BT3 9LE


Comtek Network Systems (USA)

1040 Serpentine Lane

Suite 207

Pleasanton, CA 94566


Comtek Network Systems GmbH

Nordendstraße 2

64546 Mörfelden-Walldorf


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